The paper also discusses the problem that the nozzle of new type gun was blockaded by powder during the surfacing process.

本文还对该枪在堆焊过程中易产生粉末堵枪的问题进行了一些分析。

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The movable type printing, the compass (指南针) , gun powder and the paper making are called four great inventions of China.

活字印刷术、指南针、火药和造纸术被称为中国四大发明。

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This is the mechanical type of communication, which includes the use of signal flags, the 21-gun salute, horns, and sirens.

这是一种机械式的传播，包含信号旗、21响礼炮、号角、汽笛。

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But the court offered little guidance on what type of gun control can be allowed.

VOA: standard.2010.06.29

For some Republicans and gun rights activists, the idea of any type of national gun registry is a deal-breaker.

CNN: Background checks on gun sales: How do they work?

Polls show that a strong majority of Americans support some type of initiative to stem gun violence.

CNN: Senate rejects expanded gun background checks

But let's take the issue one step further and examine places where all guns, regardless of make or type, are outlawed: gun-free zones.

CNN: The case for gun rights is stronger than you think